Here are the rules:
You cannot visit the future, only the past.
You cannot change the past. What happened, happened. If you try to save Lincoln or kill Hitler, circumstances will prevent you.
As a tourist and a collector, you can do almost anything you like. E.g., you cannot snag the Hope Diamond because it's in the Smithsonian now, but you might snag some item of jewelry known to have mysteriously vanished in a past century. You can try to score with Cleopatra (good luck with that). You can attend (and with suitably concealable equipment, record) the premier performances of all the plays of Shakespeare -- or of Euripides.
What do you do?
You cannot visit the future, only the past.
You cannot change the past. What happened, happened. If you try to save Lincoln or kill Hitler, circumstances will prevent you.
As a tourist and a collector, you can do almost anything you like. E.g., you cannot snag the Hope Diamond because it's in the Smithsonian now, but you might snag some item of jewelry known to have mysteriously vanished in a past century. You can try to score with Cleopatra (good luck with that). You can attend (and with suitably concealable equipment, record) the premier performances of all the plays of Shakespeare -- or of Euripides.
What do you do?